North Dakota Hot Air Balloon 

When a male farts into his lover's mouth while pinching her nose shut right after she exhaled.

Carol, make me a sandwich before I give you a north dakota hot air balloon.

North Dakota Hot Air Balloon by tehaudistarr February 21, 2008

North Dakotan Hot Air Balloon 

The act of sitting on a female's lap, then passing gas; causing the vagina to fill with "hot air." To "deflate the balloon," the female must abruptly stand, causing a mucky, ass-polluted queef to issue forth from her crotch, most commonly directed toward the male's face.

Last night, when Sasha was reading on the couch, I totally snuck up on her and gave her a North Dakotan Hot Air Balloon.

North Dakotan Hot Air Balloon by FrothyRothy May 31, 2010